Any doubts that it's officially Summer were put to rest this week when our favorite stylish snappers brightened up our stream with a constant flow of snaps. While Poppy and Cara Delevingne were getting busy across the pond at The Animal Ball, American designers were winning honors left and right with the CFDA when The Woolmark Prize and CFDA/Vogue Fashion Fund finalists were announced. Of course all was caught on Instagram, which means we reap the benefits. Click through to see this week's best shots!